One issue I take with the general practitioners I frequently come in contact with is their usage of the word "average".

In the broadest sense, there are two types of things in the world: things that tend toward (or cluster around) some kind of “natural” value, and things that don’t.

Often times, you are not briefed on the distribution of the graph which the very "average" is being derived from, viscerally it is being surmised that it follows a “Gaussian” distribution by the patient which then makes significant medical decisions based on such bits of information.

Therefore, I'd advise caution for those who'd base their medical decisions on arbitrary "averages", instead you are much better off if you were to take a look at the graph to see if the word "average" carries any meaning at all in such distributions.